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| Criterion |  UX Research Diary Study |  Decision Making Delphi Method |  Product Discovery Fake Door Test |
|---|---|---|---|
Purposedifferent | When experiences build up over days or weeks and a single session cannot capture them, Diary Study records the course of everyday life. Recurring triggers, moods, and habits become visible this way, beyond the sharpness of memory. | When knowledge is distributed and direct dominance should be avoided, groups quickly fall under the sway of their opinion leaders. The Delphi Method gathers assessments iteratively and gradually brings expert judgments closer together. | When demand is still unclear, it measures interest in a feature before it is built. It separates real behavior from polite agreement and deliberately keeps build effort small. |
Complexitydifferent | Medium | High | Medium |
Timedifferent | 1-4 Wochen | 1-4 Wochen | 1-5 Tage |
Participantsdifferent | 5-20 | 6-30 Experten | Nutzertraffic |
Formatsame | Async | Async | Async |
Outputdifferent | Diary Entries, Longitudinal Patterns, Experience Timeline | Expert Forecast, Consensus Range, Assumption Notes | Click Data, Interest Signal, Learning Decision |
Tagsno overlap | UX researchTrackingBehavior | ForecastingExpertsDecisionStrategy | ValidationExperimentsDemandDiscovery |
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